18QHTF21-2.1845-PD

Oscillators Overview

The 18QHTF21-2.1845-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 2.1845 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications with a supply voltage of 1.8V. It features a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component supports a Standby mode for power down functionality.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode capability for power management
• Utilizes a leadless SMD package for surface mount assembly

Oscillators Applications

• General purpose clock signal generation in embedded systems
• Timing reference for low-frequency digital circuits
• Power-sensitive portable electronic devices requiring standby modes

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6mm footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided in the official datasheet to ensure reliable assembly.

Oscillators Selection Notes

Select this component when a precise 2.1845 MHz timing source is required within a constrained physical space. The LVCMOS output is suitable for direct interfacing with standard logic families. Consider the 1.8V operating voltage if your system architecture prioritizes low power consumption. The leadless package offers advantages for high-density board designs where component height and footprint are critical factors.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co. Ltd, which specializes in quartz crystal oscillators. The series typically includes various frequencies and voltage options. Mercury Electronics is a Taiwan-based manufacturer established in 1973, focusing on frequency control products including crystals, filters, and oscillators. This specific model represents a standard XO variant within their portfolio.

Oscillators Replacement Considerations

Direct substitutes may include other 2.1845 MHz LVCMOS oscillators in a 2.0x1.6mm 4-SMD No Lead package from different manufacturers. Verify pinout compatibility and electrical specifications such as current consumption and startup time. Cross-reference with similar Mercury models like the 18QHTF21-2.21184-PD only if frequency flexibility exists in the design.